Dynamics of Submarine Structures. Part I.
Abstract
A study has been conducted concerning the difficulties associated with the development of a digital computer program for the calculation of the response of highly-complex, submarine (or submerged) structures to arbitrary dynamic excitation. The complicating aspect of this problem is the solution of the equations of motion. In reality, two problems must be solved simultaneously: (1) structural vibrations, and (2) radiation of mechanical energy into the surrounding fluid. The present study was concerned almost solely with the former problem. Three methods are explored: mode superposition, Fourier transform and time marching. In each case the equations of motion are formulated by means of the finite element method. Each method is discussed in some detail. A computer program is presented for the computation of the natural frequencies of free, longitudinal vibrations of long, thin, prismatical rods.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1969
- Accession Number
- AD0689203
Entities
People
- J. H. Baltrukonis
Organizations
- The Catholic University of America